کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886873 | 1509789 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Correlation of enhanced electrical properties and domain structure of high-TC PMN-PH-PT ceramics prepared by different methods
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The dielectric, ferroelectric and piezoelectric properties of the high-Curie temperature (high-TC) 0.15Pb(Mg1/3Nb2/3)O3-0.38PbHfO3-0.47PbTiO3 (0.15PMN-0.38PH-0.47PT) ceramics synthesized by three different methods were investigated. The 0.15PMN-0.38PH-0.47PT ceramics prepared by the partial oxalate route present the best electrical properties (TC =â¯291â¯Â°C, εm =â¯28,937, Pr =â¯32.89 μC/cm2, Ec =â¯9.35â¯kV/cm, d33 =â¯456.2 pC/N and Kp =â¯67.2%) and excellent thermal stability of the piezoactivity properties under TC. Piezoresponse force microscopy (PFM) and confocal Raman microscopy (CRM) were employed to probe the nanoscale mechanism responsible for the performance difference of the 0.15PMN-0.38PH-0.47PT ceramics prepared by three different methods, disclosing the existence of the fine stripe domains, which make up the big island domains. The interplay between the macroscopic properties and nanoscopic domain structures of the 0.15PMN-0.38PH-0.47PT ceramics has been revealed. The better ferroelectric and piezoelectric response arise from the smaller domain size, which reduces the domain wall energy; whereas the higher coercive field Ec detected by the polarization-electric field (P-E) loops results from the harder domain switching for the 0.15PMN-0.38PH-0.47PT ceramics prepared by the wet chemical synthesis techniques.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10099-10105
Journal: Ceramics International - Volume 44, Issue 9, 15 June 2018, Pages 10099-10105
نویسندگان
Rongfeng Zhu, Qihui Zhang, Bijun Fang, Dun Wu, Xiangyong Zhao, Jianning Ding,